chemistry paper 1 edexcel
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Lesduur is: 4 minOnderdelen in deze les
Slide 1 - Tekstslide
What is the test for carbon dioxide gas?
A
Turns blue litmus paper red
B
Burns with a pop sound
C
Forms a white precipitate
D
Turns limewater cloudy
Slide 2 - Quizvraag
What is the product when hydrochloric acid reacts with sodium hydroxide?
A
NaCl + H2O
B
NaOH + HCl
C
NaCl + HCl
D
HCl + H2O
Slide 3 - Quizvraag
What is the formula for sulfuric acid?
A
HSO3
B
SO4
C
H2SO3
D
H2SO4
Slide 4 - Quizvraag
What is the purpose of the electrolyte in an electrolysis cell?
A
To cool down the reaction
B
To increase the pressure
C
To decrease the temperature
D
To conduct electricity and provide ions for the reaction
Slide 5 - Quizvraag
What is the role of the anode in electrolysis?
A
It attracts positively charged ions and reduces them
B
It has no role in the process
C
It produces electrons
D
It attracts negatively charged ions and oxidizes them
Slide 6 - Quizvraag
What is the product of the electrolysis of molten lead(II) bromide?
A
Bromine liquid
B
Oxygen gas
C
Lead and bromine gas
D
Lead oxide
Slide 7 - Quizvraag
What happens at the cathode during the electrolysis of copper(II) sulfate solution?
A
Copper is deposited as a solid metal
B
Sulfate ions are discharged
C
Hydrogen gas is produced
D
Copper ions are oxidized
Slide 8 - Quizvraag
What is the purpose of using an inert electrode in electrolysis?
A
To speed up the reaction
B
To prevent unwanted side reactions at the electrode
C
To increase the conductivity of the electrolyte
D
To increase the temperature of the solution
